Speed is important, but focused speed is essential. Before ruthlessly
focusing on and pursuing an opportunity, it is necessary to take a step
back and achieve perspective and view the opportunity in a wider context.

Once you have decided that the opportunity is one that will have positive
effects for you such as you will learn from it, then speed becomes
essential in executing the task and maximizing the potential for success.

If the opportunity is not in fact anything special, then the speed could
simply be energy wasted. As such, speed does kill- the only question is
what it kills- all doubts, all competitors, or yourself!